Refactor core app
Manage recipients list
Implememt add,list and remove
Message log
Use recipient objects instead of raw numbers
Recipient comparison methods
Fix failing tests
Add severity
Move severity functions to utils package
Fix load order issue
Stringify messages
Do not pass email/telephone but recipient object
Filter by severity level
Recipient fallbacks
Format output
Fix failing basic tests
Refactor server options into a role
Move remote tests
Extend basic tests
Load tests